Read me file for supporting data files
Silber et al. (2025) "Multi-parameter constraints on empirical infrasound period�yield relations for bolides and implications for planetary defense"

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Contents:

Database
	Silber_et-al_2025_bolide_database_averaged.csv
	Silber_et-al_2025_bolide_database_single.csv

Bootstrap fits outputs
	Silber-et-al_2025_fits_bootstrap_single.xlsx
	Silber-et-al_2025_fits_bootstrap_averaged.xlsx
	
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Description of the columns in *_2025_bolide_database_*.csv:

col 1 		CNEOS Event number -- index number from CNEOS in chronological order
col 2 		Bolide event date
col 3 		Bolide event time in UTC
col 4 		Bolide Latitude [deg] -- as posted on CNEOS
col 5 		Bolide Longitude [deg] -- as posted on CNEOS
col 6 		Bolide Altitude [km] -- as posted on CNEOS
col 7 		Bolide-Station Distance [km] -- calculated in this study
col 8 		Minimum distance [km] -- calculated in this study; for single stations, this is the same as "Bolide-Station Distance", and for averaged, it is the mimimum distance (or the closest station)
col 9 		Maximum distance [km] -- calculated in this study; for single stations, this is the same as "Bolide-Station Distance", and for averaged, it is the maximum distance (or the farthest station)
col 10		Number of stations -- number of infrasound stations that detected the event
col 11		Theoretical Back Azimuth [deg] -- calculated in this study
col 12		Signal Period at Max Amp [s] -- obtained from published studies
col 13		UTC Year -- as posted on CNEOS
col 14		UTC Month -- as posted on CNEOS
col 15		UTC Day -- as posted on CNEOS
col 16		UTC Hour -- as posted on CNEOS
col 17		UTC Minute -- as posted on CNEOS
col 18		UTC Second -- as posted on CNEOS
col 19		Velocity [km/s] -- as posted on CNEOS
col 20		Total radiated energy [J] -- as posted on CNEOS
col 21		Total impact energy [kt] -- as posted on CNEOS
col 22		Path azimuth [deg] -- calculated in this study
col 23		Entry Angle [deg] -- calculated in this study
col 24		Impactor density [kg/m3] -- calculated in this study
col 25		Impactor diameter [m] -- calculated in this study
col 26		Impactor mass [kg] -- calculated in this study
col 27		Dynamic strength [kPa] -- calculated in this study
col 28		Tisserand parameter [] -- calculated in this study
col 29		LC class number -- calculated in this study; 1 = single burst (an airburst or a single dominant fragmentation event), 2 = multi-burst (2 or more fragmentation episodes, either continuous or discrete)
col 30		Begin Altitude [km] -- calculated in this study; maximum altitude at which bolide starts emitting light (above background noise)
col 31		End Altitude [km] -- calculated in this study; minimum altitude at which bolide starts emitting light (above background noise)
col 32		Altitude Span [km] -- calculated in this study; "Begin Altitude" - "End Altitiude"

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Description of the columns in *_bootstrap_fits_*.csv:

col 1-5	Parameters (binned data) included in bootstrap calculations
col 6  	N                                          
col 7  	Coefficient A (mean)                       
col 8  	Coefficient A (STDev)                      
col 9  	Coefficient B (mean)                       
col 10 	Coefficient B (STDev)                      
col 11	r2                                         
col 12	empty column                                           
col 13	A lower confidence interval (percent based)
col 14	A upper confidence interval (percent based)
col 15	B lower confidence interval (percent based)
col 16	B upper confidence interval (percent based)

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Data sources:

Ens, T.A., Brown, P.G., Edwards, W.N., Silber, E.A., 2012. Infrasound production by bolides: A global statistical study. Journal of Atmospheric and Solar-Terrestrial Physics 80, 208-229
Gi, N., Brown, P., 2017. Refinement of bolide characteristics from infrasound measurements. Planetary and Space Science 143, 169-181
Hupe, P., Vergoz, J., Pilger, C., Le Pichon, A., 2024. Characterizing the 2022 South Atlantic fireball using infrasound recordings of the International Monitoring System. Copernicus Meetings
Ott, T., Drolshagen, E., Koschny, D., Drolshagen, G., Pilger, C., Gaebler, P., Hupe, P., Mialle, P., Vaubaillon, J., Poppe, B., 2021. Infrasound signals of fireballs detected by the Geostationary Lightning Mapper. Astronomy & Astrophysics 654, A98.
Ott, T., Drolshagen, E., Koschny, D., Mialle, P., Pilger, C., Vaubaillon, J., Drolshagen, G., Poppe, B., 2019. Combination of infrasound signals and complementary data for the analysis of bright fireballs. Planetary and Space Science 179, 104715
Pilger, C., Gaebler, P., Hupe, P., Ott, T., Drolshagen, E., 2020. Global Monitoring and Characterization of Infrasound Signatures by Large Fireballs. Atmosphere 11, 83
Silber, E.A., Le Pichon, A., Brown, P.G., 2011. Infrasonic detection of a near-Earth object impact over Indonesia on 8 October 2009. Geophys. Res. Lett. 38, L12201
Silber, E., Ronac Giannone, M., Schaible, L., Sansom, E., Devillepoix, H., Edwards, T., Longenbaugh, R., Boslough, M., Bowman, D., Clemente, I., 2024. Ground-to-space observations of the 20 May 2023 bolide over Australia, Europlanet Science Congress 2024, pp. EPSC2024-2602
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